\BOOKMARK [1][-]{section.1}{Introduction}{}% 1
\BOOKMARK [1][-]{section.2}{Square arrays}{}% 2
\BOOKMARK [1][-]{section.3}{Rectangular arrays}{}% 3
\BOOKMARK [2][-]{subsection.3.1}{Search algorithms}{section.3}% 4
\BOOKMARK [2][-]{subsection.3.2}{Braided solutions}{section.3}% 5
\BOOKMARK [2][-]{subsection.3.3}{Feasibility of the braid construction}{section.3}% 6
\BOOKMARK [1][-]{section.4}{Three-dimensional arrays}{}% 7
\BOOKMARK [2][-]{subsection.4.1}{Two-layer arrays}{section.4}% 8
\BOOKMARK [1][-]{section.5}{Open questions}{}% 9
\BOOKMARK [1][-]{section.6}{Acknowledgments}{}% 10